Weil McLain 510-811-221 Pilot Assembly Kit

The Weil McLain 510-811-221 Pilot Assembly Kit is a critical OEM replacement part engineered specifically for Weil McLain CGi gas boilers (models CGi-25 through CGi-8). For technicians troubleshooting a boiler pilot light not staying lit, this kit provides a comprehensive solution by replacing the core ignition components. It includes the natural gas pilot burner, a precision-calibrated pilot orifice, and the integrated pilot bracket, ensuring proper flame rectification and seamless alignment within the burner tray. As a dedicated natural gas pilot assembly, it is designed to restore consistent ignition sequences and maintain safe operation by providing reliable signal feedback to the ignition control module. Utilizing genuine Weil McLain replacement parts ensures that the combustion characteristics meet the original manufacturer specifications, preventing the common safety hazards and efficiency losses associated with generic aftermarket components.

• Compatible with Weil McLain CGi Series gas-fired boilers, ensuring a drop-in fit for rapid service restoration.
• Features a high-grade pilot burner with bracket designed to withstand the thermal stress of continuous intermittent pilot ignition.
• Includes a factory-sized natural gas orifice for precise fuel-to-air ratios and optimal pilot flame stability.
• Simplifies the boiler repair process by providing a pre-assembled unit, reducing time spent on-site for HVAC contractors.

What is included in the 510-811-221 kit?
This kit contains the pilot burner, the pilot bracket, and the natural gas orifice. It is designed to replace the entire pilot head assembly to ensure the flame sensor and ignition source are correctly positioned.

Can this pilot assembly be used for Propane (LP) units?
No, this specific part number is calibrated for natural gas systems. Using this in an LP application without the correct orifice will result in improper combustion and potential safety risks.

What are the signs that I need to replace my Weil McLain pilot assembly?
Technicians should look for heavy oxidation on the burner head, a weak or lifting pilot flame, or failure to prove flame to the ignition module even when the gas valve is energized.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.